Home Gateway System with Telephony Functions and Method

ABSTRACT

A home gateway system has a transceiver ( 70 ) capable of establishing a wireless local loop connection ( 72 ). A voice processing system ( 74 ) is coupled to the transceiver ( 70 ). The voice processing system ( 74 ) is capable of storing a message from an incoming call. 
     A caller identification processing system ( 76 ) is coupled to the transceiver ( 70 ). The caller identification processing system ( 76 ) determines a telephone number of the incoming call and routes the incoming call to the voice processing system ( 74 ), if the telephone number belongs to a screened group of telephone numbers.

PRIORITY CLAIM AND CROSS REFERENCE TO RELATED APPLICATIONS

This patent arises from a continuation of U.S. patent application Ser.No. 11/326,307, filed Jan. 5, 2006, now U.S. Pat. No. 9,294,629, whichis a continuation of U.S. patent application Ser. No. 10/228,533, filedAug. 27, 2002, now U.S. Pat. No. 7,027,566, which is a divisional ofU.S. patent application Ser. No. 09/061,833, filed on Apr. 16, 1998.Priority to U.S. patent application Ser. Nos. 11/326,307, 10/228,533 and09/061,833 is claimed. Each of the forgoing patent applications ishereby incorporated herein by reference in its entirety.

FIELD OF THE INVENTION

The present invention relates to communication devices and moreparticularly to a home gateway system with telephony functions andmethod.

BACKGROUND OF THE INVENTION

Home owners often have a variety of machines and services for handlingtelephone functions such as answering machines or voice mail, caller ID,call waiting, three way calling, call forwarding, and voice dialing.Presently, these services are performed either by a variety of machinesthe user has to buy or by the telephony network or some combination ofboth. The customer is often confused by all these choices and machines.In addition, this disjointed approach does not allow the user to combinethese functions, for instance a user cannot have selected incoming callsrouted to his answer machine or voice mail. In addition, the presentapproach does not allow the user to combine his telephony services withhis other communication services, such as the internet or televisiondelivery services.

Thus there exists a need for a home gateway system with telephonyfunctions that can integrate the functions of the various telephoneservices and machines and provides an intelligent interface to othercommunication services.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a home gateway system with telephonyfunctions connected to a variety communication carriers in accordancewith one embodiment of the invention;

FIG. 2 is a block diagram of a home gateway system with telephonyfunctions in accordance with one embodiment of the invention;

FIG. 3 is a block diagram of a home gateway system with telephonyfunctions in accordance with one embodiment of the invention;

FIG. 4 is a block diagram of a home gateway system with telephonyfunctions in accordance with one embodiment of the invention;

FIG. 5 is a block diagram of a voice processing system used in a homegateway system with telephony functions in accordance with oneembodiment of the invention;

FIG. 6 is a block diagram of a transceiver used in a home gateway systemwith telephony functions in accordance with the one embodiment of theinvention;

FIG. 7 is a schematic diagram of a wavelength division multiplexingscheme used in a home gateway system in accordance with one embodimentof the invention;

FIG. 8 is a schematic diagram of a time division multiplexing schemeused in a home gateway system in accordance with one embodiment of theinvention;

FIG. 9 is a schematic diagram of a code division multiplexing schemeused in a home gateway system in accordance with one embodiment of theinvention;

FIG. 10 is a flow chart of a process of voice dialing used in a homegateway system in accordance with one embodiment of the invention;

FIG. 11 is a flow chart of a method of operating a home gateway systemin accordance with one embodiment of the invention;

FIG. 12 is a flow chart of a method of using a derived lines procedurein a home gateway system in accordance with one embodiment of theinvention;

FIG. 13 is a schematic diagram of a derive lines scheme used in a homegateway system in accordance with one embodiment of the invention;

FIG. 14 is a flow chart of a method of operating a home gateway systemin accordance with one embodiment of the invention; and

FIGS. 15 & 16 are flow charts of a method of operating a home gatewaysystem in accordance with one embodiment of the invention.

DETAILED DESCRIPTION OF THE DRAWINGS

A home gateway system has a transceiver that is capable of establishinga wireless local loop connection. A voice processing system is coupledto the transceiver. The voice processing system is capable of storing amessage from an incoming call. A caller identification processing systemis coupled to the transceiver. The caller identification processingsystem determines a telephone number of the incoming call. Routing theincoming call to the voice processing system if the telephone numberbelongs to a screened group of telephone numbers.

The home gateway system combines the functions of a number of commonlyused telephone and communication devices. By combining these devices newfunctions can be provided. For instance, an incoming call can beidentified by a caller ID system and a switch can be used to route thesecalls to a voice mail system. Numerous other advantages and synergy'swill become apparent in the appended specification.

FIG. 1 is a schematic diagram of a home gateway system 20 with telephonyfunctions connected to a variety communication carriers in accordancewith one embodiment of the invention. The home gateway system 20 islocated inside a house 22. The home gateway system 20 has an input toreceive a cable television (satellite, XDSL, ADSL) 24 input signal. Thehome gateway system 20 is also connected by a wireless local loop 26 anda base station 28 to the public switch telephone network (PSTN) 30. Theantenna 32 for the wireless local loop 26 is shown in the attic of thehouse. The PSTN 30 provides access to an internet service provider (ISP)34, which provides access to the internet 36. A telephone 38, television40, computer 42 and printer 44 can all be connected to the home gatewaysystem 20. The home gateway system 20 allows the computer 42 to talk tothe printer 44 or to the ISP 34. The telephone 38 can place a standardtelephone call over the PSTN 30 or place a data telephone call over theinternet 36.

FIG. 2 is a block diagram of a home gateway system 20 with telephonyfunctions in accordance with one embodiment of the invention. In thisembodiment a switch 50 is connected to an external telephony channel 52and an internal telephony channel (plurality of internal telephonelines) 54. In one embodiment the external telephony channel 52 is anxDSL (Digital Subscriber Line) link with a central office, such as anADSL (Asymmetrical digital Subscriber Line) Link. The xDSL link providesone or more derived digital voice channels as described in the copendingapplication, U.S. Ser. No. 08/742,164, entitled “Method and Apparatusfor Providing a derived Digital Telephone Voice Channel”, filed on Nov.1, 1996, assigned to the same assignee as the present invention and thesubject matter which is incorporated herein by reference thereto. Theexternal telephony channel 52 using the invention described in the abovereferenced application provides a plurality of digital derived telephonechannels and a data channel of such an ADSL link. A processor 56 isconnected to the switch 50. The processor (controller) 56 sends andreceives messages from the switch 50. A caller identification system 58is connected to the processor 56. The caller identification system 58receives an identify query from the processor 56. Once the incomingtelephone call number has been identified the switch can route the callbased on some predetermined criteria. For instance, calls not on apreferred list could be routed to a voice mail box. In this embodimentthe home gateway system 20 can be connected to a standard telephoneline.

In one embodiment, the switch 50 allows the owners to make “intercom”type calls. When an intercom call command (e.g., dialing an internalextension) is received, the calling line is connected with anotherinternal phone line. In another embodiment the switch acts as anelectronic receptionist. The caller is given a plurality of options(e.g., users' extensions) and the switch routes the incoming call to oneof the plurality of internal telephone lines based on the callerresponse.

FIG. 3 is a block diagram of a home gateway system 20 with telephonyfunctions in accordance with one embodiment of the invention. In thisembodiment the home gateway system 20 has a transceiver 70 capable ofestablishing a wireless local loop connection 72. A voice processingsystem 74 is coupled to the transceiver 70. The voice processing system74 is capable of storing a message from an incoming call. A calleridentification processing system 76 is coupled to the transceiver 70.The caller identification processing system 76 determines a telephonenumber of the incoming call. If the telephone number belongs to ascreened group of telephone numbers, routing the incoming call to thevoice processing system 74. The voice processing system 74, in oneembodiment, provides a list of voice synthesized options to the caller.For instance, the voice processing system might announce the voice mailboxes for each member of the family. In one embodiment, the user may beasked to speak the name of the family member they wish to leave amessage. A speech recognition unit in the voice processing system 74then recognizes the spoken name and connects the caller with the familymember's voice mail box.

In one embodiment, the home gateway system has a processor coupled tothe transceiver 70. The processor determines if an incoming call isreceived during an existing call. When the incoming call is receivedduring an existing call, an indicia is posted of the incoming call to auser. The indicia can be a light, or a beep over a speaker separate fromthe telephone line. This provides the user the functionality of callwaiting without the obnoxious beep during the telephone conversation.

FIG. 4 is a block diagram of a home gateway system 20 with telephonyfunctions in accordance with one embodiment of the invention. A wirelesstransceiver 70 has an antenna 78 and is capable of establishing awireless local loop 72 connection with a base station 28. A wirelesslocal loop is a telephony connection between the PSTN (telephonynetwork) and a subscriber's home. The wireless local loop is analternative to a standard wired local loop connection. A single basestation 28 will generally cover an entire neighborhood. In oneembodiment the base station 28 to subscriber link is a point tomulti-point (broadcast) link.

The link from the subscriber's house to the base station 28 is a pointto point link. These links are not mobile links, but geographicallystable. This simplifies the processing of a wireless local loop comparedto a mobile (cellular, PCS) telephone link and allows for lower cost,higher quality telephone links. In one embodiment, the home gatewaysystem includes a display. The display is used by the caller ID systemto display numbers and can be used for other displays.

The wireless transceiver 70 is connected to a switch 50 as in theprevious embodiments. The switch 50 in this case is connected to a voicebridge 80, as well as the processor 56 and the router 82. The processor56 is connected to a smart card interface 84, a voice processing system74 and a caller identification system 76. The router 82 is connected tothe television processing system 86 and to a home automation andsecurity system 88. The router 82 is used to route computer data amongcomputer devices also.

The smart card interface 84 is used to store and download (setupinstructions) various user preferences or setups. The voice processingsystem 74 includes a complete voice mail system and a voice recognitionand speech synthesis system. The voice processing system 74 incombination with the switch acts as an electronic receptionist for anincoming phone call. In addition, the voice processing system is usedfor voice activated dialing. The caller identification system 76 logsincoming calls and is used for call screening. In one embodiment allcalls not on a preferred list are routed to the voice mail of the voiceprocessing system 84. This requires the switch 50 to query the processor56 on how to route incoming calls. The voice bridge 80 is used to setupthree way calls (conference calls).

The home automation and security system 88 can send messages through therouter 82 to a computer, television processing system 86 or have thewireless transceiver 70 place a call to emergency personnel. Thetelevision processing system 86 receives a plurality of televisionsignals from a cable. The smart card interface 84 is used to setup thevarious appliances and to turn on or off lights. A user can call incommands to the home automation and security system 88 by using thespeech recognition technology of the voice processing system 74. Thevoiced command is recognized and converted into a data command that thehome automation and security system 88 understands. In one embodimentthe user's voice is authenticated by a speaker recognition system in thevoice processing system 74, before a voiced command will be obeyed.

FIG. 5 is a block diagram of a voice processing system 74 used in a homegateway system with telephony functions in accordance with oneembodiment of the invention. The voice processing system 74 contains aspeech recognition system 100, a speaker verification system 102, aspeech synthesis system 104 and a voice mail memory system 106. Thecontrol of the systems of the voice processing system 74 is performed inone embodiment by the processor 56. The processor 56 coordinates thevoice system 100-106 to provide machine reception and voice mailcapabilities for instance.

FIG. 6 is a block diagram of a transceiver 70 used in a home gatewaysystem with telephony functions in accordance with the one embodiment ofthe invention. The transceiver 70 has a duplexer 120 that isolates theincoming signals from the outgoing signals based on their frequencies.Outgoing analog voice signals are first encoded by a vocoder 122. Thevocoder 122 converts the analog voice signal to a digital voice signal.Some outgoing signals will be digital signals, if for instance the useris using a digital cordless telephone in the house. Digital voicesignals will generally be passed on to the multiplexer 124, however insome circumstances the digital voice signal is compressed by a datacompression circuit 126. When the signal is a data signal it may also becompressed. All the outgoing signals are then multiplexed together bythe multiplexer 124. The multiplexer 124 in one embodiment time divisionmultiplexes the outgoing signals. In another embodiment, the multiplexer124 wavelength division multiplexes the outgoing signals. In anotherembodiment, the multiplexer 124 code division multiplexes the signals.The particular multiplexing scheme that is used depends on therequirements of the wireless local loop. The outgoing signals are thenmodulated by the modulator 127. Then the outgoing signals are upconverted by a carrier signal 128 at a mixer 130. A processor 132controls the multiplexer 124 and receives certain control information.

The incoming signals are first down converted by a local oscillatorsignal 134 at the mixer 136. The incoming signals are then demodulated(demodulated output) by a demodulator 138. A demultiplexer 140 thendemultiplexes the incoming signals. When the incoming signals arecompressed, they are expanded by the data compression circuit 126. Whena digitized voice signal needs to be converted to an analog voicesignal, the vocoders 122 perform this function. The incoming signals arethen passed to the switch.

FIG. 7 is a schematic diagram of a wavelength division multiplexingscheme 150 used in a home gateway system in accordance with oneembodiment of the invention. The diagram shows a plurality of wavelengthdivision multiplexed channels 152 and a control channel 154 carried byseparate wavelengths (frequencies) W0 through W24 156.

FIG. 8 is a schematic diagram of a time division multiplexing scheme 160used in a home gateway system in accordance with one embodiment of theinvention. The diagram shows a plurality of time division multiplexedchannels (ch0, ch1, . . . ch24) 162 carried at different time slots (T0,T1, . . . T24).

FIG. 9 is a schematic diagram of a code division multiplexing scheme 170used in a home gateway system in accordance with one embodiment of theinvention. The diagram shows a plurality of channels 172 carried ondifferent codes (CD0, CD1 . . . CD24) 174. The codes are used tomodulate the channels and the channels can be recovered by demodulatingwith the appropriate codes. Commonly the wireless local loop would havetwo to four voice channels and a control channel.

FIG. 10 is a flow chart of a process of voice dialing used in a homegateway system in accordance with one embodiment of the invention. Theprocess starts, step 200, by receiving an off-hook signal at step 210.Next, a voice command is received by the home gateway system at step212. When the voice command of step 212 is a call request, a voiced nameis received at step 214. A speech recognition process is performed onthe voiced name and the recognized name is matched with an associatedtelephone number at step 216. At step 218 the home gateway systeminitiates a telephone call over a wireless local loop to the associatedtelephone number, which ends the process at step 220.

In another embodiment the voiced command is a voice mail request. Inthis case the home gateway system will play a plurality of voice mailoptions to the user. The user can then voice a desired choice. In thisway the voice mail can be operated by voice commands entirely instead ofrequiring keypad entries.

In another embodiment the voiced command is an email request. In thiscase the voice processing system converts the titles of each of theemails in a user's mail box from text to an audio signal. Then thetitles are announced to the user. The user then announces his voicedselection. The voice processing system then converts the body of theemail to an audio signal and plays the email to the user. This allowsthe user to interact with his email in at a purely vocal level. Inanother embodiment the home gateway system first initiates acommunication session over the wireless local loop to an email provider.The user's emails (plurality of emails) are then downloaded to the homegateway system.

In yet another embodiment the voice command is a request to forward auser's calls to a predetermined telephone number (predeterminedforwarded telephone number).

In this case the home gateway system requests a user voice a code. Thehome gateway system then performs a speaker verification on the code toverify the user's identity. When the user's identity is verified, theuser is allowed to state a voiced command that forwards his call to apredetermined number. This embodiment allows a user to forward his callsusing only voiced commands and verifies the user's identity forsecurity.

In another embodiment, the home gateway system is used for conferencecalls. A first telephone call is established, then a conference callcommand is given. The command can be a flash hook, a voice command or atouch pad code on the telephone for instance. Next, a second telephonecall is connected through a voice bridge. Then the first telephone callis connected through the voice bridge.

FIG. 11 is a flow chart of a method of operating a home gateway systemin accordance with one embodiment of the invention. The method starts,step 230, by receiving a voiced command at step 232. Next it isdetermined if the voiced command is a call request at step 234. When thevoiced command is the call request, a voiced name is received at step236. The voiced name is recognized by a speech recognition system andconverted to an associated telephone number at step 238. A call is thenplaced to the associated telephone number over the wireless local loop(WLL) connection at step 240.

When the voiced command is not a call request, a speaker verificationroutine is performed at step 242. When the user is not verified, theuser is denied access to the home gateway system's features and theprocess ends, step 244. In another embodiment, the user is asked toinput a PIN (Personal Identification Number) when the system cannotverify their voice. When the user is verified, the user selects betweenthe voice mail system, the email system and a forwarding request. Whenthe user selects a forwarding request at step 246, the system receives avoiced command directing that the user's call be directed to aparticular number at step 248. The home gateway system then waits for anincoming call at step 250. When an incoming call is received determineif a call forward cancel command is received. When a call forwardcommand is not received, the call is forwarded at step 252.

When the user selects the email system at step 254, the titles of theemails are converted to an audio signal and played to the user at step256. The user then voices a selection at step 258. The body of theselected email is then converted to an audio signal and played to theuser at step 260. In one embodiment the process then allows the user toenter another voice command.

When the user selects the voice mail system at step 262, the voice mailsystem then plays the options to the user. At step 264 the user states avoiced option. The option is then implemented at step 266. In oneembodiment the process then allows the user to enter another voicecommand.

FIG. 12 is a flow chart of a method of using a derived lines procedurein a home gateway system in accordance with one embodiment of theinvention. The process starts, step 280, by receiving an off-hook signalat step 290. Next, it is determined if an external telephone linerequest has been received at step 292. It is only necessary to performthe derived lines process when an external telephone line request isreceived. Next, it is determined if all of a plurality of externaltelephone lines are in use at step 294. When all the external telephonelines are in use, a derived lines procedure is performed at step 296.The derived lines procedure steals bandwidth from the other lines tocreate another line. At step 298, the call is connected over the derivedline, which ends the process at step 300.

FIG. 13 is a schematic diagram of a derive lines scheme used in a homegateway system in accordance with one embodiment of the invention. Inone embodiment, the wireless local loop supports two telephone lines.When both telephone lines are in use, the derive lines technique candivide one of the lines in two and create three lines or the totalbandwidth can be reallocated among the three lines. In the embodimentshown in FIG. 13, an up-link line 310 transmits for a time slot. Thedown link channel 312 also transmits for one time slot. The derive linesscheme data compresses the existing signal by a factor of ½ and alsocompress the new signal by ½. Then the up-link time slot is divided inhalf (compressed communication session), so that there is a first uplinktime slot (outgoing portion) 314 and a second uplink time slot 316. Thedown-link time slot is also divided in half, so that there is a firstdown-link time slot 318 and a second down-link time slot 320. While thederived lines scheme is described in conjunction with a time divisionmultiplexing scheme, it can also be implemented with a wavelengthdivision multiplexing scheme or a code division multiplexing scheme.

FIG. 14 is a flow chart of a method of operating a home gateway systemin accordance with one embodiment of the invention. The method starts,step 350, by receiving an incoming call at step 352. Next, a telephonenumber associated with the incoming call is determined at step 354. Atstep 358 it is determined if the telephone number belongs to a set ofpreferred telephone numbers. When the telephone number does not belongto the set of preferred telephone numbers, a caller is requested tospeak their name at step 360. At step 362 the spoken name is recorded.The recording of the spoken name is played, at step 364, so the user candetermine whether to answer the phone, which ends the process at step366.

FIGS. 15 & 16 are flow charts of a method of operating a home gatewaysystem in accordance with one embodiment of the invention. The processstarts, step 380, by receiving an incoming call at step 382. At step 384the caller 10 system determines a telephone number associated with theincoming call. Next, it is determined at step 386 if the incomingtelephone number is part of a set of preferred set of telephone numbers.When the incoming number is not part of the preferred set of numbers,the caller is asked to speak their name at step 388. A recording of thespoken name is made at step 390. A speech recognition process isperformed at step 392. At step 394 it is determined if the spoken namebelongs to a set of preferred callers (recognized name). When the spokenname does not belong to the set of preferred callers, the recording ofthe spoken name is played at step 396. If the user decides not to answerthe call, at step 398, the call is sent to voice mail at step 400. Inanother embodiment the home gateway system just hangs up on the incomingcall. If the user decides to answer the call, at step 398, that ends theprocess at step 402.

When the spoken name does belong to the set of preferred callers at step394, it is determined if the spoken name belongs to an owner (set ofowners) at step 404. When the spoken name does not belong to an owner,at step 404, or the incoming telephone number is part of the preferredtelephone numbers, at step 386, the telephone is rung at step 406. Whenthe telephone is answered at step 408, that ends the process at step410. When the telephone is not answered within a predetermined time atstep 408, the user is provided a number of options (plurality ofoptions) at step 412. The options fall into two categories, leaving avoice mail, step 414, or control options at step 416. Before the calleris allowed access to the control options a speaker verification processis performed at step 418. If the speaker cannot be verified, the processends, step 410. In another embodiment, the user is asked to enter a PIN,if the system cannot verify their voice. When the speaker is verified,they are provided a number of control options at step 420. These optionsinclude controlling or monitoring the home security system at step 422,controlling or monitoring the home appliances, lights, etc. at step 424or controlling the voice mail system at step 426.

Thus, there has been described a home gateway system that integrates anumber telephone products and services. The integration of theseproducts and services allows the user to perform a number ofsophisticated call screening and processing functions. In addition, thehome gateway system combines the home security system and computernetworks with the telephone systems to bring about operationalsynergy's.

The methods described herein can be implemented as computer-readableinstructions stored on a computer-readable storage medium that whenexecuted by a computer will perform the methods described herein.

While the invention has been described in conjunction with specificembodiments thereof, it is evident that many alterations, modifications,and variations will be apparent to those skilled in the art in light ofthe foregoing description. Accordingly, it is intended to embrace allsuch alterations, modifications, and variations in the appended claims.

1.-37. (canceled)
 38. A tangible machine readable storage deviceincluding instructions that, when executed, cause a machine to performoperations comprising: identifying a calling telephone number associatedwith an incoming call; when the calling telephone number is anauthorized telephone number, providing a caller of the incoming callaccess to a plurality of control options of a home automation system viaa voice processing system; and when the calling telephone number is anunauthorized telephone number: requesting the caller to speak a name ofthe caller during the incoming call; obtaining the name of the caller byperforming speech recognition on a response to the request uttered bythe caller during the incoming call; and when the name corresponds to anauthorized person, providing the caller of the incoming call access tothe plurality of control options of the home automation system via thevoice processing system.
 39. The storage device as defined in claim 38,wherein the operations further include playing a recording of the spokenname to a destination party of the incoming call when the namecorresponds to an unauthorized person.
 40. The storage device as definedin claim 38, wherein the operations further include posting an indicatorof the incoming call to a user when the incoming call is received duringan existing call.
 41. The storage device as defined in claim 38, whereinthe operations further include causing a speech synthesizer to play theplurality of control options to the caller.
 42. The storage device asdefined in claim 38, wherein the operations further include directingthe incoming call to a voice mail control system based on a response tothe plurality of control options.
 43. The storage device as defined inclaim 38, further including a voice bridge.
 44. The storage device asdefined in claim 38, further including a smart card interface toimplement at least one of the plurality of control options.
 45. Thestorage device as defined in claim 38, wherein the operations furtherinclude when the name corresponds to an unauthorized person, performingspeaker verification before providing the caller of the incoming callaccess to the plurality of control options.
 46. A method, comprising:identifying, by executing an instruction with a processor, a callingtelephone number associated with an incoming call; when the callingtelephone number belongs to a list of authorized telephone numbers,granting, by executing an instruction with the processor, a caller ofthe incoming call access to a plurality of control options a homeautomation system via a voice processing system; and when the callingtelephone number does not belong to the list of authorized telephonenumbers: obtaining, by executing an instruction with the processor, anutterance made by the caller in response to a request for a name of thecaller, the utterance made during the incoming call; obtaining, byexecuting an instruction with the processor, the name of the caller byperforming speech recognition on the utterance; determining, byexecuting an instruction with the processor, whether the name of thecaller corresponds to an authorized set of people; and when the name ofthe caller corresponds to one of the authorized set of people, granting,by executing an instruction with the processor, the caller access to theplurality of control options via the voice processing system.
 47. Amethod as defined in claim 46, further including playing the utteranceto a destination party of the incoming call when the name does notcorrespond to one of the authorized set of people.
 48. A method asdefined in claim 46, further including posting an indicator of theincoming call to a user when the incoming call is received during anexisting call.
 49. A method as defined in claim 46, further includingcausing a speech synthesizer to play the plurality of control options tothe caller.
 50. A method as defined in claim 46, further includingdirecting the incoming call to a voice mail control system based on aselection.
 51. The method of claim 46, further including, when thecalling telephone number does not belong to the list of authorizedtelephone numbers and the name of the caller corresponds to one of theauthorized set of people, performing a speaker verification beforegranting the caller access to the control options.